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Dell Brocade 6520 Fabric OS Troubleshooting and Diagnostics Guide v7.1.0 - Page 113

Using D_Port with HBAs, Disabling D_Port, Saving port mappings on an Access Gateway

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Diagnostic Port (D_Port) 10 7. To display a summary of the D_Port, use the portDportTest [slot/]port command with the - -show all operand. switch:admin> portdporttest --show all Port State SFP Capabilities Test Result 24 ONLINE E,O PASSED 26 ONLINE E,O RESPONDER 33 OFFLINE --- RESPONDER 8. Optional: If one of the switches reboots, or if the test does not complete on one of the switches, restart the test on both switches. Perform a portDportTest - -stop command and restart the test with the portDportTest - -start command on both switches. Disabling D_Port Use this procedure to disable the D_Port diagnostics session described above. 1. Disable Port 1 on Switch A by using the portDisable 1 [slot/]port command. switchA:admin> portdisable 1 2. Disable the D_Port on Port 1 on Switch A by using portCfgDport - -disable 1. switchA:admin> portcfgdport --disable 1 3. Repeat steps 1 and 2 for Port 2 on Switch B. switchB:admin> portdisable 2 switchB:admin> portcfgdport --disable 2 4. Enable Port 1 on Switch A by using the portEnable [slot/]port command. switchA:admin> portenable 1 5. Enable Port 2 on Switch B by using the portEnable [slot/]port command. switchB:admin> portenable 2 Saving port mappings on an Access Gateway Before configuring ports as D_Ports on a switch configured as an Access Gateway, you must remove N_Port-to-F_Port and device (WWN) mappings on the subject ports and device, However, Fabric OS commands are available to save N_Port mappings. Once you save them, you can display the saved N_Port mappings to reconfigure them after D_Port is disabled. A command is also available to delete saved N_Port mappings. NOTE For more details, refer to Chapter 2, "Configuring Ports in Access Gateway Mode," in the Access Gateway Administrator's Guide, as well as to the Fabric OS Command Reference. Using D_Port with HBAs When HBAs are used (see "Topology 4: HBA to switch" on page 95), D_Port mode initiates electrical loopback, optical loopback, and link traffic diagnostic tests on the link between the HBA and the connected switch port. Results can be viewed from the switch by means of Fabric OS commands and from the adapter by means of the Brocade Command Line Utility (BCU) and Brocade Host Connectivity Manager (HCM) during or after testing. Once in D_Port mode, the adapter port does not participate in fabric operations, log in to a remote device, or run data traffic. Fabric OS Troubleshooting and Diagnostics Guide 97 53-1002751-01

Section	Page
About This Document	11
How this document is organized	11
Supported hardware and software	12
What’s new in this document	12
Document conventions	13
Text formatting	13
Command syntax conventions	13
Command examples	13
Notes, cautions, and warnings	14
Key terms	14
Additional information	14
Brocade resources	14
Other industry resources	15
Getting technical help	15
Document feedback	16
Introduction	17
Troubleshooting overview	17
Network time protocol	17
Most common problem areas	18
Questions for common symptoms	18
Gathering information for your switch support provider	21
Setting up your switch for FTP	21
Capturing a supportSave	21
Capturing output from a console	22
Capturing command output	23
Building a case for your switch support provider	23
Basic information	23
Detailed problem information	24
Gathering additional information	25
General	27
Licenses	27
Time	27
Frame Viewer	28
Switch message logs	28
Switch boot	29
Rolling Reboot Detection	30
FC-FC routing connectivity	32
Generating and routing an ECHO	32
Superping	33
Route and statistical information	36
Performance issues	37
Connectivity	39
Port initialization and FCP auto-discovery process	39
Link issues	41
Connection problems	41
Checking the physical connection	41
Checking the logical connection	42
Checking the Name Server	42
Link failures	44
Determining a successful speed negotiation	44
Checking for a loop initialization failure	45
Checking for a point-to-point initialization failure	45
Correcting a port that has come up in the wrong mode	46
Marginal links	46
Troubleshooting a marginal link	47
Device login issues	49
Pinpointing problems with device logins	49
Media-related issues	51
Testing a port’s external transmit and receive path	52
Testing a switch’s internal components	52
Testing components to and from the HBA	52
Segmented fabrics	52
Reconciling fabric parameters individually	53
Downloading a correct configuration	54
Reconciling a domain ID conflict	54
Reconciling incompatible software features	55
Port mirroring	56
In-Order Delivery	56
Port mirroring considerations	56
Supported platforms	57
Maximum mirror connections	58
Configuring a port to be a mirror port	58
Adding a port mirror connection	58
Deleting a port mirror connection	59
Displaying port mirror connections	59
Configuration	61
Configuration upload and download issues	61
Gathering additional information	64
Brocade configuration form	64
Firmware Download Errors	67
Blade troubleshooting tips	67
Firmware download issues	68
Troubleshooting with the firmwareDownload command	70
Gathering additional information	71
USB error handling	71
Considerations for downgrading firmware	72
Preinstallation messages	72
Blade types	74
Firmware versions	74
Platform	75
Routing	75
Security	77
Passwords	77
Password recovery options	78
Device authentication	78
Protocol and certificate management	79
Gathering additional information	79
SNMP	80
Gathering additional information	80
FIPS	80
Virtual Fabrics	81
General Virtual Fabrics troubleshooting	81
Fabric identification issues	82
Logical Fabric issues	82
Base switch issues	83
Logical switch issues	84
Switch configuration blade compatibility	85
Gathering additional information	86
ISL Trunking	87
Link issues	87
Buffer credit issues	88
Getting out of buffer-limited mode	88
Zoning	89
Overview of corrective action	89
Verifying a fabric merge problem	89
Verifying a TI zone problem	89
Segmented fabrics	90
Zone conflicts	91
Correcting a fabric merge problem quickly	92
Changing the default zone access	93
Editing zone configuration members	93
Reordering the zone member list	93
Checking for Fibre Channel connectivity problems	94
Checking for zoning problems	95
Gathering additional information	96
Diagnostic Features	97
About Fabric OS diagnostics	97
Diagnostic information	97
Power-on self test	98
Disabling POST	100
Enabling POST	100
Switch status	100
Viewing the overall status of the switch	100
Displaying switch information	101
Displaying the uptime for a switch	102
Using the SpinFab and portTest commands	103
Debugging spinFab errors	104
Clearing the error counters	105
Enabling a port	105
Disabling a port	106
Diagnostic Port (D_Port)	106
Understanding D_Port	107
Supported topologies	109
Using D_Port without HBAs	111
Using D_Port with HBAs	113
Controlling testing	116
Example test scenarios and output	116
Port information	121
Viewing the status of a port	121
Displaying the port statistics	122
Displaying a summary of port errors for a switch	123
Equipment status	124
Checking the temperature, fan, and power supply	124
Checking the status of the fans	124
Checking the status of a power supply	125
Checking temperature status	125
System message log	126
Displaying the system message log, with no page breaks	126
Displaying the system message log one message at a time	127
Clearing the system message log	127
Port log	127
Viewing the port log	127
Syslogd configuration	129
Configuring the host	129
Configuring the switch	130
Automatic trace dump transfers	131
Specifying a remote server	131
Enabling the automatic transfer of trace dumps	131
Setting up periodic checking of the remote server	131
Saving comprehensive diagnostic files to the server	132
Switch Type and Blade ID	133
Hexadecimal Conversion	137
Example conversion of the hexadecimal triplet Ox616000	137
Decimal-to-hexadecimal conversion table	138

Match case Limit results 1 per page

Fabric OS Troubleshooting and Diagnostics Guide

53-1002751-01

Diagnostic Port (D_Port)

To display a summary of the D_Port, use the

portDportTest

[slot/]port

command with the

- -show all

operand.

switch:admin>

portdporttest --show all

Port State SFP Capabilities Test Result

=============================================

24 ONLINE E,O PASSED

26 ONLINE E,O RESPONDER

33 OFFLINE --- RESPONDER

Optional:

If one of the switches reboots, or if the test does not complete on one of the

switches, restart the test on both switches. Perform a

portDportTest - -stop

command and

restart the test with the

portDportTest - -start

command on both switches.

Disabling D_Port

Use this procedure to disable the D_Port diagnostics session described above.

Disable Port 1 on Switch A by using the

portDisable 1

[slot/]port

command.

switchA:admin>

portdisable 1

Disable the D_Port on Port 1 on Switch A by using

portCfgDport - -disable 1

switchA:admin>

portcfgdport --disable 1

Repeat steps 1 and 2 for Port 2 on Switch B.

switchB:admin>

portdisable 2

switchB:admin>

portcfgdport --disable 2

Enable Port 1 on Switch A by using the

portEnable

[slot/]port

command.

switchA:admin>

portenable 1

Enable Port 2 on Switch B by using the

portEnable

[slot/]port

command.

switchB:admin>

portenable 2

Saving port mappings on an Access Gateway

Before configuring ports as D_Ports on a switch configured as an Access Gateway, you must

remove N_Port-to-F_Port and device (WWN) mappings on the subject ports and device, However,

Fabric OS commands are available to save N_Port mappings. Once you save them, you can display

the saved N_Port mappings to reconfigure them after D_Port is disabled. A command is also

available to delete saved N_Port mappings.

NOTE

For more details, refer to Chapter 2, “Configuring Ports in Access Gateway Mode,” in the

Access

Gateway Administrator’s Guide,

as well as to

the

Fabric OS Command Reference

Using D_Port with HBAs

When HBAs are used (see

“Topology 4: HBA to switch”

on page 95), D_Port mode initiates electrical

loopback, optical loopback, and link traffic diagnostic tests on the link between the HBA and the

connected switch port. Results can be viewed from the switch by means of Fabric OS commands

and from the adapter by means of the Brocade Command Line Utility (BCU) and Brocade Host

Connectivity Manager (HCM) during or after testing. Once in D_Port mode, the adapter port does

not participate in fabric operations, log in to a remote device, or run data traffic.